FarmVille Birthday Gift available for free for one day only

Sure, we've seen limited-time-only free gifts released in FarmVille before, but not usually like this. To help celebrate the game's second birthday, Zynga has launched the Birthday Gift box on the game's free gifts page. This present works just as any other Mystery Box, in that the prize you'll receive will be a complete surprise.

Well, ok, perhaps not a complete surprise, because of course we've gone through the trouble of sending and receiving enough of these gifts to last us until FarmVille's third birthday and can tell you what's inside:
Balloon Sign
Party Duck
Arjuna Tree
Fertilize All
Ossabaw Pig

As of right now, the Balloon Sign is the only brand new item to come from this Birthday Gift, but it seems like the rate of receiving one is fairly high, so you shouldn't be stuck with too many "worthless" items if that's all you want.

If more items are added to this Mystery Birthday Gift, we'll make sure to let you know, but either way, you'll need to be fast in sending them to your friends - they'll only be available for a day.